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Diapositiva 1
Diapositiva 1

The Core - WLWV Staff Blogs
The Core - WLWV Staff Blogs

Electricity and magnetism connection
Electricity and magnetism connection

...  Faster motion means a higher voltage will be created. ...
Test - Scioly.org
Test - Scioly.org

... 23. The magnetic field B inside a long ideal solenoid is independent of: A. the current B. the cross-sectional area C. the direction of the current D. the spacing of the windings E. the core material 24. Magnetic field lines inside the electromagnet shown are: A. counterclockwise circles as viewed f ...
Magnetic Domains
Magnetic Domains

... Source of Magnetism 5. What produces a magnetic field? Electrons carrying a negative charge as they move through space 6. Define magnetic moment. The strength of the field 7. How can a magnetic field be detected? It can be detected by using a compass Click the “next” button. Diamagnetic, Paramagneti ...
Ferrofluids - SRJC | Santa Rosa Junior College
Ferrofluids - SRJC | Santa Rosa Junior College

What creates an electric current
What creates an electric current

... A series circuit has only one pathway for the current. ...
Document
Document

Word
Word

... 1. Two fixed wires cross each other perpendicularly so that they do not actually touch but are close to each other as shown in the figure. Equal currents i exist in the wires, in the directions indicated. a. In what region(s) will there be points of zero net magnetic field? b. If the wires are free ...
The magnetic field-induced insulating state in amorphous
The magnetic field-induced insulating state in amorphous

... The magnetic field-induced insulating state in amorphous superconductors Benjamin Sacépé1 ...
Atomic-scale Magnetism on a Complex Surface
Atomic-scale Magnetism on a Complex Surface

8Jsumm
8Jsumm

... Magnetism is a non-contact force. Magnets attract magnetic materials. Iron, nickel and cobalt are magnetic materials. Mixtures, like steel, that include a magnetic material will also be attracted to a magnet. Other metals, like aluminium, are not magnetic and will not be attracted to a magnet. Iron ...
Word
Word

... A house has a floor area of 112 m² and an outside wall that has an area of 28 m². the earth’s magnetic field at that location has a horizontal component of 2.6 x 10-5 T, north, and a vertical component of 4.2 x 10-5 T, down. Determine the magnetic flux through the wall if the wall faces (a) north, a ...
Study Guide - Chapter 29
Study Guide - Chapter 29

... Though the net force on a loop of wire in a uniform magnetic field is always zero, a magnetic field can exert torque on a loop of wire. This is given by the equation: t t‚B 7t œ . t is called the magnetic moment. It is defined as follows.: The vector . t is ME, where M is the current, and E is the a ...
Nanowire by Tunneling Magnetoresistive Sensor
Nanowire by Tunneling Magnetoresistive Sensor

... phosphorescent emitters. However, there are two main issues in the practical application of phosphorescent OLEDs (PHOLEDs): the relatively short operational lifetime and the relatively high cost owing to the costly emitter with a concentration of about 10% in the emitting layer. Here, we report on o ...
Slide 1
Slide 1

... • Teachers with a class of students – They would need to have passed a CERN training program to run the equipment and know and understand CERN procedures ...
make it magnetic
make it magnetic

... The ferrimagnetism will give rise to spontaneous magnetisation then ordering occurs at T < Tc. Example: Magnetite (Fe3O4) ...
THE HALF-FILLED LANDAU LEVEL: THE CASE FOR
THE HALF-FILLED LANDAU LEVEL: THE CASE FOR

The Charge to Mass Ratio of the electron
The Charge to Mass Ratio of the electron

... Today’s experiment is designed to determine the functional form of the magnetic force law. velocity To determine the functional form of the magnetic force law, we will take a beam of charged particles (electrons) and pass the beam through a magnetic field B perpendicular to the velocity v of the bea ...
Section 15: Magnetic properties of materials
Section 15: Magnetic properties of materials

... of these factors is justifiable in the case of paramagnetic and diamagnetic materials because M is very small compared to B (typically χ = B / M ~ 10−5 ), unlike the electric case, in which χ ~ 1. But when we deal with ferromagnetic materials, where M is quite large, this omission is no longer tenab ...
Confinement of spherical plasma by means of fields generated by
Confinement of spherical plasma by means of fields generated by

... It is known that the optimal configuration of magnetic field for plasma confinement is configuration with a minimum magnetic field strength in the center of the chamber. Charged particles in this case can not move in the area of radially increasing magnetic field. The magnetic field with a minimum i ...
Electron Spin Resonance (ESR) Spectroscopy (Electron
Electron Spin Resonance (ESR) Spectroscopy (Electron

... Bohr Magnetons). The corresponding proportionality between the orbital angular momentum and magnetic moment is 1.0. Thus the effective g for an electron in a dn complex say will depend upon how much orbital angular momentum contributes to the magnetic moment, and whether this orbital contribution ac ...
Magnetic Fields & Magnetic Field Strength
Magnetic Fields & Magnetic Field Strength

... Magnetic Fields & Magnetic Field Strength ...
Magnetism_ppt
Magnetism_ppt

No Slide Title
No Slide Title

< 1 ... 117 118 119 120 121 122 123 124 125 ... 139 >

Giant magnetoresistance



Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR.The effect is observed as a significant change in the electrical resistance depending on whether the magnetization of adjacent ferromagnetic layers are in a parallel or an antiparallel alignment. The overall resistance is relatively low for parallel alignment and relatively high for antiparallel alignment. The magnetization direction can be controlled, for example, by applying an external magnetic field. The effect is based on the dependence of electron scattering on the spin orientation.The main application of GMR is magnetic field sensors, which are used to read data in hard disk drives, biosensors, microelectromechanical systems (MEMS) and other devices. GMR multilayer structures are also used in magnetoresistive random-access memory (MRAM) as cells that store one bit of information.In literature, the term giant magnetoresistance is sometimes confused with colossal magnetoresistance of ferromagnetic and antiferromagnetic semiconductors, which is not related to the multilayer structure.
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